cmake SASL2 examples

KDE/qca plugins/qca-cyrus-sasl/CMakeLists.txt :2 

find_package(Sasl2 REQUIRED)

btccom/btcpool-ABANDONED CMakeLists.txt :309 

find_package(Sasl2)

cvet/fonline ThirdParty/mongo-c-driver/src/libmongoc/CMakeLists.txt :318 

find_package(SASL2 2.0)